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Effective Impervious Area Calculator (Patent Pending)
Aimed for use by hydrologists and those interested in storm water management, the Effective Impervious Area (EIA) Calculator is a very powerful tool designed to provide you with a method of calculating the EIA of your watershed based on the annual flow signal from your hydrometric station!
Stations with multiple years of record allow you to assess how the EIA of your watershed is changing as development progresses.
The EIA Calculator requires a one-time setup for your specific catchment. Contact us for more information.
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